CN108425367B - Movable support shield for urban pipe bag construction and mounting seat thereof - Google Patents
Movable support shield for urban pipe bag construction and mounting seat thereof Download PDFInfo
- Publication number
- CN108425367B CN108425367B CN201810312267.2A CN201810312267A CN108425367B CN 108425367 B CN108425367 B CN 108425367B CN 201810312267 A CN201810312267 A CN 201810312267A CN 108425367 B CN108425367 B CN 108425367B
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- Prior art keywords
- shield
- mounting seat
- lap joint
- bearing
- guide
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
Abstract
The invention discloses a movable support shield for urban pipe bag construction and an installation seat thereof. The movable supporting shield comprises a plurality of shield units which are sequentially arranged, each shield unit comprises a mounting seat and a shield main body, each mounting seat is arranged on two side walls of a pipe bag tunnel, each mounting seat comprises a bearing part, each shield main body is detachably arranged on each bearing part, one end upper side of each bearing part is provided with an outwards extending lap joint part, the other end of each bearing part is provided with a guide part which is matched with the shape of each lap joint part, the shield units can move relative to each other, and the lap joint part of the mounting seat of one shield unit in two adjacent shield units is overlapped on the guide part of the mounting seat of the other shield unit in the moving process. Through the mode, the support of the pipe bag tunnel can be formed under the condition that the wall-protecting piles are not required to be poured.
Description
Technical Field
The invention relates to the field of construction engineering, in particular to a movable support shield for urban pipe bag construction and an installation seat thereof.
Background
The pipe bag is a public tunnel used for intensively laying municipal pipelines such as electric power, communication, broadcasting and television, water supply and drainage, heating power, fuel gas and the like under the ground.
At present, in the construction of a pipe bag, temporary support is basically carried out by pouring wall protection piles on two sides of a pipe bag tunnel, under the protection of the wall protection piles, the middle soil body is excavated, a working space for prefabrication and assembly or cast-in-situ of a structural object is formed, and the casting construction of the urban pipe bag structural object is carried out. According to the distance of 3 m and the average depth of 12 m, 7200 m wall protection piles are needed per kilometer, and according to 1600 yuan per meter, the temporary support engineering cost is needed to be put into the urban pipe bag structure per kilometer and reaches 1200 ten thousand.
The construction investment of the pipe bag construction project is increased due to high temporary support engineering cost, and urban road traffic is cut off by adopting a comprehensive excavation construction organization mode, so that traffic untangling and diversion are required during construction, traveling and normal life of residents are seriously disturbed, and urban road traffic is disordered. And after the construction of the pipe bag is finished, the retaining wall piles remained underground are reserved for the future urban underground space to be developed and utilized again.
Disclosure of Invention
The invention mainly solves the technical problem of providing a movable support shield for urban pipe bag construction and an installation seat thereof, which can form the support of a pipe bag tunnel under the condition of no need of pouring a wall-protecting pile. In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a portable support shield for urban pipe bag is built, portable support shield includes a plurality of shield units that set gradually, the shield unit is including setting up mount pad and the shield main part at pipe bag tunnel both sides wall, the mount pad includes the carrier part, shield main part detachably installs on the carrier part, the one end upside of carrier part is equipped with the overlap joint portion that outwards extends, the other end of carrier part be equipped with the guiding portion of overlap joint portion shape adaptation, a plurality of shield units can mutual relative movement, and in the removal process the overlap joint portion overlap joint of the mount pad of one of two adjacent shield units is on the guiding portion of the mount pad of another shield unit.
Preferably, the mounting seats further comprise elastic cushion blocks, and the elastic cushion blocks are clamped between the end parts of the bearing parts of the two adjacent mounting seats.
Preferably, the bottom of the bearing part is further provided with a bottom plate, and the bottom plate extends outwards towards the direction part of the lap part so as to shield and support the elastic cushion block.
Preferably, a trapezoid guide groove is formed in the upper portion of the guide portion, the shape of the lap joint portion is matched with that of the trapezoid guide groove, and the lap joint portion can be embedded into the trapezoid guide groove.
Preferably, the lower end of the guide portion is formed with an arc chamfer.
In order to solve the technical problems, the invention adopts another technical scheme that: the utility model provides a mount pad of portable support shield, the mount pad includes the portion of bearing, the one end upside of bearing is equipped with the overlap joint portion that outwards extends, the other end of bearing be equipped with the guiding portion of overlap joint portion shape adaptation, the overlap joint portion of one mount pad of two adjacent mount pads can overlap joint on the guiding portion of another mount pad.
Preferably, the mounting seat further comprises an elastic cushion block, and the elastic cushion block is arranged on the end face of the bearing part.
Preferably, the bottom of the bearing part is further provided with a bottom plate, and the bottom plate extends outwards towards the direction part of the lap part so as to shield and support the elastic cushion block.
Preferably, a trapezoid guide groove is formed in the upper portion of the guide portion, the shape of the lap joint portion is matched with that of the trapezoid guide groove, and the lap joint portion can be embedded into the trapezoid guide groove.
Preferably, the lower end of the guide portion is formed with an arc chamfer.
The beneficial effects of the invention are as follows: compared with the prior art, the invention has a plurality of shield units which are sequentially arranged, two adjacent shield units are mutually overlapped through the mounting seat, after the front shield unit advances by one end distance, the rear shield unit is still overlapped with the front shield unit, after the pipe bag in the working space formed by the rear shield unit is constructed, the rear shield unit can continuously advance through the guidance of the overlapped part, and after the pipe bag is constructed, the shield main body of the shield unit can be detached from the mounting seat and transported away.
Drawings
FIG. 1 is a schematic diagram of a front view of a mobile support shield for urban pipe bladder construction according to an embodiment of the present invention;
fig. 2 is a schematic front view of a shield unit of the mobile shield shown in fig. 1;
fig. 3 is a schematic front view of a mounting base of a mobile support shield according to an embodiment of the present invention;
FIG. 4 is a schematic top view of the mount shown in FIG. 3;
fig. 5 is a schematic perspective view of the mounting base shown in fig. 3.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, schematic front view structures of a mobile support shield for urban pipe bladder construction according to an embodiment of the present invention are shown. The portable support shield of this embodiment includes a plurality of shield units 1 that set gradually, shield unit 1 is including setting up mount pad 10 and the shield main part 20 at pipe bag tunnel both sides wall, mount pad 10 includes carrier part 11, shield main part 20 detachably installs on carrier part 11, carrier part 11's one end upside is equipped with the overlap joint portion 12 of outside extension, carrier part 11's the other end is equipped with the guide part 13 with overlap joint portion 12 shape adaptation, a plurality of shield units 1 can mutual relative movement, and the overlap joint portion 12 overlap joint of the mount pad 10 of two adjacent shield units 1 in the removal in-process shield unit 1 is on the guide part 13 of the mount pad 10 of another shield unit 1. The shield main body 20 and the bearing part 11 can be detachably connected in various connection modes, for example, a threaded hole is formed in the bearing part 11, and the shield main body 20 is fixed on the bearing part 11 through the threaded hole.
When the movable supporting shield of the embodiment is constructed by the pipe bag, a plurality of sequentially arranged shield units 1 are placed in the pipe bag tunnel, and the pipe bag tunnel is not supported and protected in the initial stage of placing the shield units 1, so that a section of soil body can be excavated firstly, after one shield unit 1 is placed into the pipe bag tunnel to form a support, a section of soil body is excavated forwards, and then the next shield unit 1 is excavated. Thus, according to this flow, a plurality of shield units 1 are finally put into the support, and for convenience of explanation, the number of shield units 1 is three in the present embodiment.
After the plurality of shield units 1 form a support, the cast-in-situ or assembly operation of the tubular bag structure is completed in the support space formed by the third shield unit 1. After the pipe bag structure works, after the soil body with the section of the preset length in front of the first shield unit 1 is hollowed, the first shield unit 1 moves forwards, and the moving distance is smaller than the length of the bearing part 11 of the mounting seat 10, so that the bearing part 11 of the mounting seat 10 of the second shield unit 1 is still partially overlapped on the guide part 13 of the mounting seat 10 of the first shield unit 1. The second shield unit 1 is then moved forward under the guidance of the guide part 13 of the mount 10 of the first shield unit 1, and finally the third shield unit 1 is moved forward under the guidance of the guide part 13 of the mount 10 of the second shield unit 1. After a plurality of movements, the finished pipe bag structure is completely exposed, and then the finished pipe bag structure is subjected to operations such as waterproof layer construction, backfilling and the like so as to recover the urban road.
Since the shield main body 20 of the shield unit 1 has a large mass, typically several tens tons or even hundreds tons, the shield main body 20 can be prevented from sinking relative to the previous shield main body 20 during the moving process by sequentially overlapping the overlap portion 12 of each mount 10 with the guide portion 13. And after the construction of the pipe bags is finished, each shield unit 1 can be recycled. When retrieving, if there is no mount pad, but the shield main body 20 directly contacts the ground, because the ground is usually a mud surface, there is very big adhesion resistance between the shield main body 20 and the ground when lifting the shield main body 20, and the mobile support shield of this embodiment does not have the phenomenon that adhesion resistance influences lifting when lifting the shield main body 20 because the shield main body 20 is mounted on the mount pad 10.
By means of the mode, the movable supporting shield can form the supporting of the pipe bag tunnel under the condition that the wall-protecting piles are not required to be poured, and operation procedures of supporting, soil excavation, spoil transportation, prefabricated hoisting (structure cast-in-situ), waterproof layer construction, backfilling and the like can be organically combined into a whole, so that the movable supporting shield has the advantages of being low in construction investment, short in construction period, small in urban road traffic influence and the like.
In this embodiment, the mounting base 10 further includes an elastic pad 14, and the elastic pad 14 is sandwiched between the ends of the bearing portions 11 of two adjacent mounting bases 10. Since each shield unit 1 is moved forward or backward during the supporting, when the adjacent two mounting seats 10 are relatively moved, a gap between ends of the bearing parts 11 of the adjacent two mounting seats 10 may be pushed with soil, and after the soil fills the gap, the shield main body 20 of the latter shield unit 1 may be lifted, thereby affecting the construction. This is avoided by sandwiching the elastic pad 14 between the ends of the bearing portions 11 of the adjacent two mounting seats 10.
Further, in order to prevent soil from being scraped up when the mount 10 is moved, the lower end of the guide portion 13 may be formed with an arc-shaped chamfer.
The bottom of the carrier 11 may also be provided with a bottom plate 15, which bottom plate 15 extends partly outwards in the direction of the overlap 12 to shield the resilient pad 14. The bottom plate 15 protects the carrying part 11, that is, the carrying part 11 may be configured as a hollow structure, that is, the carrying part 11 may be configured by a plurality of transverse tendons and longitudinal tendons, and the shield main body 20 may be mounted on the longitudinal tendons. Because the elastic cushion blocks 14 are compressed when the two adjacent mounting seats 10 are relatively close, the elastic cushion blocks are pressed between the end faces of the bearing parts 11 of the two mounting seats 10, so that soil cannot enter; however, when the two adjacent mounting seats 10 are relatively far away, the distance between the ends of the bearing portions 11 of the two adjacent mounting seats 10 may be greater than the original width of the elastic cushion 14, and if the end faces of the elastic cushion 14 and the bearing portions 11 are not fixed to each other, the elastic cushion 14 will fall out between the ends of the bearing portions 11 of the two adjacent mounting seats 10, and the elastic cushion 14 may be prevented from falling by being supported by the bottom plate 15.
In order to guide the bearing portion 11 more accurately when the two adjacent mounting seats 10 move relatively, in this embodiment, a trapezoidal guide groove 131 is formed in the upper portion of the bearing portion 13, the shape of the bearing portion 11 is adapted to the trapezoidal guide groove 131, and the bearing portion 11 can be embedded into the trapezoidal guide groove 131. That is, both sides of the trapezoidal guide groove 131 are inclined surfaces, and the opening size is larger than the groove bottom size of the trapezoidal guide groove 131, so that the two inclined surfaces of the trapezoidal guide groove 131 can guide the carrying part 11 to enter easily when the carrying part 11 enters the trapezoidal guide groove 131.
The invention also provides a mounting seat of the movable supporting shield, which has the same technical characteristics as the mounting seat in the previous embodiment, specifically, as shown in fig. 3 to 5, the mounting seat 10 comprises a bearing part 11, an externally extending lap part 12 is arranged at the upper side of one end of the bearing part 11, a guiding part 13 with the shape matched with the lap part 12 is arranged at the other end of the bearing part 11, and the lap part 12 of one mounting seat 10 of two adjacent mounting seats 10 can be lapped on the guiding part 13 of the other mounting seat 10. When the mounting base 10 is used for the movable supporting shield of the foregoing embodiment, the weight of the shield main body 20 can be borne, and the lap joint portion 12 and the guide portion 13 of two adjacent mounting bases 10 are overlapped with each other, so that the shield main body 20 can be prevented from sinking in the moving process.
Further, the mounting base 10 further includes an elastic pad 14, and the elastic pad 14 is disposed on an end surface of the bearing portion 11. When the two mounting seats 10 are sequentially arranged, the elastic cushion 14 is clamped between the end parts of the bearing parts 11 of the two mounting seats 10. The elastic pad 14 prevents soil from entering between the ends of the carrying portions 11 of the two mounting bases 10, causing the shield main body 20 to be lifted. Further, in order to prevent soil from being scraped up when the mount 10 is moved, the lower end of the guide portion 13 may be formed with an arc-shaped chamfer.
The bottom of the carrying part 11 may also be provided with a bottom plate 15, which bottom plate 15 extends outwards towards the direction of the overlap 12 to shield and support the resilient pad 14. The bottom plate 15 protects the bearing part 11, that is, the bearing part 11 may be configured with a hollow structure, that is, the bearing part 11 may be configured with a plurality of transverse tendons and longitudinal tendons, and the shield main body 20 may be mounted on the longitudinal tendons, and may be detachably connected by using a threaded connection or the like during mounting. Because the elastic cushion blocks 14 are compressed when the two adjacent mounting seats 10 are relatively close, the elastic cushion blocks are pressed between the end faces of the bearing parts 11 of the two mounting seats 10, so that soil cannot enter; however, when the two adjacent mounting seats 10 are relatively far away, the distance between the ends of the bearing portions 11 of the two adjacent mounting seats 10 may be greater than the original width of the elastic cushion 14, and if the end faces of the elastic cushion 14 and the bearing portions 11 are not fixed to each other, the elastic cushion 14 will fall out between the ends of the bearing portions 11 of the two adjacent mounting seats 10, and the elastic cushion 14 may be prevented from falling by being supported by the bottom plate 15.
In order to guide the bearing portion 11 more accurately when the two adjacent mounting seats 10 move relatively, in this embodiment, a trapezoidal guide groove 131 is formed in the upper portion of the bearing portion 13, the shape of the bearing portion 11 is adapted to the trapezoidal guide groove 131, and the bearing portion 11 can be embedded into the trapezoidal guide groove 131. That is, both sides of the trapezoidal guide groove 131 are inclined surfaces, and the opening size is larger than the groove bottom size of the trapezoidal guide groove 131, so that the two inclined surfaces of the trapezoidal guide groove 131 can guide the carrying part 11 to enter easily when the carrying part 11 enters the trapezoidal guide groove 131.
The bearing portion 11, the lap portion 12 and the guide portion 13 of the mounting seat 10 of the present embodiment may be welded and fixed to each other, or may be integrally formed.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. The movable supporting shield for urban pipe bag construction is characterized by comprising a plurality of shield units which are sequentially arranged, wherein each shield unit comprises mounting seats and shield main bodies which are arranged on two side walls of a pipe bag tunnel, each mounting seat comprises a bearing part, each shield main body is detachably arranged on each bearing part, an outwards extending lap joint part is arranged on one upper side of each bearing part, a guide part matched with the shape of each lap joint part is arranged on the other end of each bearing part, the shield units can move relatively to each other, and the lap joint part of the mounting seat of one shield unit in the adjacent two shield units is overlapped on the guide part of the mounting seat of the other shield unit in the moving process; the mounting seats further comprise elastic cushion blocks, and the elastic cushion blocks are clamped between the end parts of the bearing parts of the two adjacent mounting seats; the upper portion of the guide part is provided with a trapezoid guide groove, the shape of the lap joint part is matched with the trapezoid guide groove, and the lap joint part can be embedded into the trapezoid guide groove.
2. The mobile support shield of claim 1, wherein the bottom of the carrier portion is further provided with a bottom plate extending outwardly toward the directional portion of the overlap portion to shield and support the resilient pad.
3. The mobile support shield of claim 1, wherein the lower end of the guide portion forms an arcuate chamfer.
4. The mounting seat for the movable supporting shield for urban pipe bag construction according to claim 1, wherein the mounting seat comprises a bearing part, an outwards extending lap joint part is arranged on the upper side of one end of the bearing part, a guide part matched with the lap joint part in shape is arranged on the other end of the bearing part, and the lap joint part of one mounting seat of two adjacent mounting seats can be lapped on the guide part of the other mounting seat.
5. The mount of claim 4, further comprising an elastomeric pad disposed on an end surface of the carrier.
6. The mounting base according to claim 5, wherein the bottom of the bearing portion is further provided with a bottom plate, and the bottom plate extends outward toward the direction portion of the overlap portion to shield and support the elastic pad.
7. The mounting base according to claim 4, wherein a trapezoid guide groove is formed in the upper portion of the guide portion, the shape of the lap joint portion is matched with that of the trapezoid guide groove, and the lap joint portion can be embedded into the trapezoid guide groove.
8. The mount of claim 4, wherein the lower end of the guide portion forms an arcuate chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312267.2A CN108425367B (en) | 2018-04-09 | 2018-04-09 | Movable support shield for urban pipe bag construction and mounting seat thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312267.2A CN108425367B (en) | 2018-04-09 | 2018-04-09 | Movable support shield for urban pipe bag construction and mounting seat thereof |
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| Publication Number | Publication Date |
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| CN108425367A CN108425367A (en) | 2018-08-21 |
| CN108425367B true CN108425367B (en) | 2023-08-29 |
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| CN201810312267.2A Active CN108425367B (en) | 2018-04-09 | 2018-04-09 | Movable support shield for urban pipe bag construction and mounting seat thereof |
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| CN109594995B (en) * | 2019-01-31 | 2021-01-12 | 长安大学 | Weak surrounding rock tunnel perturbation motive machinery subsection tunneling construction method |
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| CN108425367A (en) | 2018-08-21 |
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